St. Louis County Map, Missouri

St. Louis County Map Collection
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St. Louis County, Missouri

Nestled in eastern Missouri, St. Louis County wraps around the independent city of St. Louis like a horseshoe. It’s a suburban area with a diverse population.
From Lambert International Airport to Lone Elk Park, there’s no shortage of landmarks and green spaces to explore. The area also boasts an impressive culinary scene.
Despite its urban feel, the county has Castlewood State Park, which is a local favorite for hiking and mountain biking. It’s a perfect mix of city life, culture, and green spaces to explore.
Category | Details |
---|---|
County Name | St. Louis County |
County Seat | Clayton |
Population | Approximately 996,000 |
Cities, Towns, and Communities | Florissant, Chesterfield, Kirkwood, Ballwin, Maryland Heights, Creve Coeur, Ferguson, Wildwood |
Interstates and Highways | I-64, I-70, I-44, I-270, I-170, MO 141, MO 364, MO 367 |
FIPS Code | 29-189 |
Total Area (Land and Water) | 523 square miles (Land: 508 sq mi, Water: 15 sq mi) |
Adjacent Counties (and Direction) | St. Charles County (North), Madison County, Illinois (Northeast), City of St. Louis (East), Franklin County (Southwest), Jefferson County (South), St. Clair County, Illinois (Southeast), Monroe County, Illinois (Southeast) |
Time Zone | Central Time Zone (CT) |
State | Missouri |
Coordinates | 38.6103° N, 90.4125° W |
Etymology | Named after King Louis IX of France |
Major Landmarks | Forest Park, Missouri Botanical Garden, Saint Louis Zoo, Grant’s Farm, Lambert International Airport |
Website | St. Louis County Website |
TRANSPORTATION MAP
St. Louis County Road Map
St. Louis County lives in the fast lane. Interstate 270 loops the whole show, forming a giant beltway. Meanwhile, I-70, I-64, and I-44 slice through east-west. This keeps everything moving… usually. Even with all those lanes, bottlenecks happen. Zoom in with our map to see the maze for yourself (and maybe find a few secret backroads).

SATELLITE IMAGERY
St. Louis County Satellite Map
Our satellite map shows a blend of busy and green. Subdivisions sprawl across the east and middle. Although the Missouri River marks the western edge, forests still cling along the bluffs.

OUTLINE MAP
St. Louis County Blank Map
St. Louis County wraps around the city like a heavy coat. The Missouri River curves along its northwest side, and the Mississippi River trims the east. Although it borders Illinois across the rivers, most of its neighbors are Missouri counties.

Neighboring Counties
Here are the 7 neighboring counties of St. Louis County: